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Recursive least squares algorithms to detect abnormal operation in PV systems

Scientists in Spain have implemented recursive least squares (RLS) algorithms for anomaly detection in PV systems and have found they can provide “more realistic and meaningful assessment” than traditional energy analysis.

Detect quality risks to avoid losing entire projects

The multiple failures of a 10 MW floating photovoltaic (FPV) installation were the subject of an in-depth quality analysis at pv magazine’s Focus event, held as part of The smarter E Europe in Munich, Germany.

Reducing PV module temperature with cooled air from the ground

Researchers from Iraq have used computational fluid dynamics to simulate the operation of a 100 W panel with ground cooling. The proposed technique was reportedly able to reduce panel temperature by up to 28%, with power generation increasing by up to 6.5%.

Monitoring PV plants with 3D remote sensing data

Scientists in Spain have developed thermal image mapping on dense and high-resolution point clouds representing status and geometry of PV modules and automatic identification of individual solar panels in 3D space. The proposed methodology was found to provide “exceptionally high” accuracy.

PV string fault detection technique based on multi-layer neural network

Scientists in India have proposed using a multilayer neural network to find line-to-ground, line-to-line, and bypass diode faults in PV module strings. They tested the new approach on a 22.5 kW solar array and reportedly achieved “competitive” accuracy results.

Using commercially available inverters for daylight photoluminescence imaging

An Australian research group has used an SMA inverter to switch the operating point of a PV array and has demonstrated its ability to create photoluminescence images for both rooftop and large scale solar installations.

Glint Solar adds PV degradation maps to utility-scale developer software

The Norwegian PV planning software company said it added the new PV degradation maps to pinpoint site locations with favorable climatic conditions.


Assessing wind sensitivity of offshore floating solar

Researchers in China have conducted a numerical study on the wind sensitivity of offshore floating solar plants. They have tested six row-arrangements of panels and have found an optimal system configuration that is reportedly less sensitive to wind direction.


Quantifying effect of cooling, cleaning in PV systems operating under desert conditions

Scientists in Oman have analyzed the effect of soiling, cleaning, and water injection on the performance of PV panels in Oman. They have found the use of water for cooling may increase power yield by up to 23.9%.


New tech to remanufacture recycled perovskite solar cells

An international research team has developed a novel way to remanufacture fully encapsulated perovskite solar cells after recycling. The researchers say the devices can achieve 88% of the original efficiency of the products.


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